Dr. Ralph S. Peiris, DO
- Medicare services, 2024
- 851
- Medicare patients, 2024
- 835
- Part D claims, 2024
- 514
- MIPS score, 2024
- 97
- Hospital affiliations
- 1
- Practice address
- 1531 Esplanade, Chico, CA 95926
- Practice phone
- Call (530) 332-7300
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Peiris' professional email, personal email and mobile number
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Dr. Ralph S. Peiris is an emergency medicine physician in Chico, California
Dr. Peiris practices at Enloe Health in Chico, California, part of Enloe Health.
Dr. Peiris' NPI, 1730142282, was assigned on April 7, 2006. Dr. Peiris holds California license 20A8157.
- NPI
- 1730142282NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2769476258
- NPI enumeration date
- April 7, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (530) 332-7300
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ralph S. Peiris practices at Enloe Health in Chico, California
Dr. Peiris' primary practice is Enloe Health, at 1531 Esplanade, Chico, CA 95926 in Butte County. The practice phone is (530) 332-7300.
- Enloe Health1531 Esplanade, Chico, CA 95926 · Butte CountyPhone(530) 332-7300
Source: Dmand AI Affiliation Data
Dr. Ralph S. Peiris is affiliated with 2 sites of care and 4 medical groups
Dr. Peiris' primary practice is Enloe Health in Chico, California, part of Enloe Health. The medical group on file is Chico Hospitalist Group. Dmand AI also links Dr. Peiris to 3 more medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ralph S. Peiris' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Peiris practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Enloe Health | Available with a free account |
| +1 more site and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Enloe Health and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Ralph S. Peiris is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Peiris' primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Peiris is licensed in California.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
Emergency medicine physicians near Dr. Peiris
Counts of emergency medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ralph S. Peiris billed Medicare for 851 services in 2024
CMS data shows 851 Medicare services from Dr. Peiris across 7 procedure codes in 2024, for 835 Medicare patients. Medicare paid $102,192 for them.
Dr. Peiris' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 7912024: 8518%
Where Dr. Peiris' Medicare services took place, 2024
- In an office809%
- In a facility77191%
Dr. Peiris compared with the California median for emergency medicine physicians, 2024
- Dr. Peiris
- California median
- Medicare services
- 851vs 2653.2 times
- Medicare patients
- 835vs 2433.4 times
- Part D claims
- 371vs 626.0 times
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Peiris' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Peiris and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ralph S. Peiris treated 835 Medicare patients in 2024, average age 74
CMS counts 835 Medicare patients who saw Dr. Peiris in 2024. The largest group is 65 to 74, with 292 patients. 75% of them have high blood pressure, and 74% have high cholesterol. 39% are also on Medicaid. Their average risk score is 1.88, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Peiris' median patient age at 75, with 55% women.
Dr. Peiris' Medicare patients by age, 2024
Dr. Peiris' Medicare patients by sex, 2024
- Women46255%
- Men37345%
Chronic conditions among Dr. Peiris' Medicare patients, 2024
- High blood pressure75%
- High cholesterol74%
- Arthritis47%
- Mood disorders38%
- Anxiety37%
- Depression33%
- Diabetes33%
- Atrial fibrillation31%
Share of Medicare patients with each condition. A patient can have several.
Dr. Peiris' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women55%
- Men45%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ralph S. Peiris wrote 514 Medicare Part D claims in 2024
In 2024, Dr. Peiris wrote 514 Medicare Part D claims for 350 patients. 96% of them were for generic drugs. CMS names the drug for 371 of them, across 11 drugs with 11 or more claims each, at $2,399 in total drug cost. In 2023, CMS named 310 claims across 10 drugs.
Dr. Peiris' Part D claims by kind of drug, 2024
- Generic493 claims96%
- Brand-name21 claims4%
Dr. Peiris' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Peiris' Part D claims, 2024
- Opioids27%139 of 514 claims
- Antibiotics27%140 of 514 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3102024: 37120%
Drugs named by CMS: 11 in 2024, 10 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Ralph S. Peiris scored 97 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 97 out of 100 for Dr. Peiris for performance year 2024, reported as part of a group. Dr. Peiris accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Peiris' MIPS scores, performance year 2024
- 97of 100Final score
- 82.5of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 86of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. Ralph S. Peiris received $125 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Peiris from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. Ipsen Biopharmaceuticals, Inc paid the most, $125.
Companies that paid Dr. Peiris the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ralph S. Peiris's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ralph S. Peiris
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ralph S. Peiris' NPI number?
Dr. Ralph S. Peiris' NPI number is 1730142282. It was assigned on April 7, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ralph S. Peiris?
Dr. Ralph S. Peiris is an emergency medicine physician in Chico, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Ralph S. Peiris practice?
Dr. Peiris practices at 1531 Esplanade, Chico, CA 95926. Dr. Peiris' primary practice is Enloe Health in Chico, California, part of Enloe Health. Dmand AI also links Dr. Peiris to 3 medical groups and 1 group practice or clinic.
What is Dr. Ralph S. Peiris' office phone number?
The practice phone on file for Dr. Peiris is (530) 332-7300.
What is Dr. Ralph S. Peiris' medical license number?
Dr. Peiris holds California license 20A8157.
Which hospitals is Dr. Ralph S. Peiris affiliated with?
Dr. Peiris practices at Enloe Health in Chico, California.
What medical group is Dr. Ralph S. Peiris part of?
Dr. Peiris is linked to Chico Hospitalist Group. Dmand AI links Dr. Peiris to 3 more medical groups.
Does Dr. Ralph S. Peiris accept Medicare?
Yes. CMS data shows Dr. Peiris billed Medicare for 851 services in 2024, and Dr. Peiris accepts Medicare assignment.
What is Dr. Ralph S. Peiris' MIPS score?
Dr. Peiris' MIPS final score for performance year 2024 is 97 out of 100, reported as part of a group.
How many Medicare patients does Dr. Ralph S. Peiris see?
CMS counts 835 Medicare patients who saw Dr. Peiris in 2024, with an average age of 74.
Show 4 more questionsShow fewer questions
What services does Dr. Ralph S. Peiris bill to Medicare?
In 2024, Dr. Peiris' most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and office visit, established patient (99214).
What drugs does Dr. Ralph S. Peiris prescribe most?
In 2024 Medicare Part D data, Dr. Peiris' most prescribed drugs by claims were Tramadol HCl, Ondansetron ODT and Hydrocodone-Acetaminophen.
Has Dr. Ralph S. Peiris received payments from drug or device companies?
CMS Open Payments shows $125 in general payments to Dr. Peiris from 1 company from 2024 to 2024. The largest total came from Ipsen Biopharmaceuticals, Inc.
How long has Dr. Ralph S. Peiris been practicing?
Dr. Peiris graduated from medical school in 1998, 28 years ago.
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